Abaixo está uma instrução que descreve uma tarefa de geração de SQL, combinada com uma entrada que fornece mais contexto sobre os esquemas de tabela disponíveis. Escreva o código SQL que responda adequadamente à solicitação
 ###Instrução: Qual é o tamanho do eleitorado de 2009 para Gwalior Rural?
 ###Tabelas: CREATE TABLE chinese_taipei_women's_national_football_team (chinese_taipei_women's_national_football_team_id AUTO_INCREMENT PRIMARY KEY, Date VARCHAR, Venue VARCHAR, Score VARCHAR, Competition VARCHAR, Report VARCHAR) CREATE TABLE ultra-low_voltage_processors (ultra-low_voltage_processors_id AUTO_INCREMENT PRIMARY KEY, Model Number VARCHAR, Clock Speed VARCHAR, L1 Cache VARCHAR, L2 Cache VARCHAR, FSB Speed VARCHAR, Clock Multiplier VARCHAR, Idle Power VARCHAR, Socket VARCHAR, Cores INT, Release Date VARCHAR) CREATE TABLE season_1:_2007–2009 (season_1:_2007–2009_id AUTO_INCREMENT PRIMARY KEY, Prod. No. VARCHAR, Title VARCHAR, Written by VARCHAR, Directed by VARCHAR, Original airdate VARCHAR) CREATE TABLE downstream_pittsburgh_to_olmsted (downstream_pittsburgh_to_olmsted_id AUTO_INCREMENT PRIMARY KEY, Locks & Dam VARCHAR, Location [L ] VARCHAR, River Mile INT, Lock Side VARCHAR, Lock Lift/Drop (in feet) VARCHAR, Pool Length (miles) VARCHAR) CREATE TABLE assembly_segments (assembly_segments_id AUTO_INCREMENT PRIMARY KEY, Constituency number VARCHAR, Name VARCHAR, Reserved for ( SC / ST /None) VARCHAR, District VARCHAR, Number of electorates (2009) INT)  
SELECT Number of electorates (2009) FROM assembly_segments WHERE Name = gwalior rural